Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebacd5ea27966cc6…

MALICIOUS

PDF

70.0 KB Created: 2021-09-27 11:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c066143dfc721316f4ca25f750e9c9f3 SHA-1: e91b8aa5b4c556dc4cba8f770e502ad054802095 SHA-256: ebacd5ea27966cc640584e36841860aca4764eb0a0e5ae683767f62a074f6ad2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to disposable hosting and appear to be part of a link farm. This behavior, combined with ML and ClamAV detections, strongly suggests a phishing or malware distribution scheme. The file's purpose is to lure users into clicking malicious links, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cructi.ru/uplcv?utm_term=who+are+we+where+do+we+come+from+where+are+we+going PDF link annotation
    • http://zhhyhb.com/uploadfiles/files/87026272388.pdfIn PDF document text
    • http://whatifitspossible.com/ckfinder/userfiles/files/30663736062.pdfIn PDF document text
    • http://savoie-outils-coupants.com/ckfinder/userfiles/files/dawunanasojamizad.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/22004407816.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613cc6d36a2e6---92383582137.pdfIn PDF document text
    • http://chaodontuonglai.vn/uploads/ck_upload/files/85412607765.pdfIn PDF document text
    • http://mudrberanova.cz/userfiles/file/mamopi.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/12169685278.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/bebanokuvonafujawunul.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/a0586b404d97d3f5b4672da32ae2acfb/47291015843.pdfIn PDF document text
    • http://uran-berlin.com/userfiles/file/18392640913.pdfIn PDF document text
    • https://mywayrtk.com/userfiles/file/20648486823.pdfIn PDF document text
    • http://alteredcompta.com/buddha/ckfinder/userfiles/files/56424298189.pdfIn PDF document text
    • https://quangcaowebsite.xemlaco.com/uploads/files/pisufuvisekozi.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-9/file/tebexanujokumusifin.pdfIn PDF document text
    • http://cnex.cc/images/blog/file/sagurafir.pdfIn PDF document text
    • http://fujiya-la.com/uploads/files/lolabarut.pdfIn PDF document text
    • http://kengosushionlineorder.com/uploads/files/danejuloxa.pdfIn PDF document text
    • http://mama-care.com/UserFiles/file/42496569127.pdfIn PDF document text
    • https://resttour.com/images/userfiles/files/97132586561.pdfIn PDF document text
    • https://yaslibakicisi.net/userfiles/file/puworetezakota.pdfIn PDF document text
    • http://xpeedon.net/userfiles/file/20210926161814.pdfIn PDF document text
    • http://krukewittfarms.com/userfiles/file/supekotitoxemisakanole.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aeb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C4 17024 bytes
SHA-256: 243209ae926e42b55f9422626ba55007bb3f529987e785c248ac8e2414713265
font_02_sfnt_off0000f20a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20A 10692 bytes
SHA-256: 1b0776c15b94d669eb9504198e11fda3bd1be2b8864102438eb60fc53709af16

Open this report in the interactive analyzer, or submit your own file for analysis.